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Finding the Fourth Proportional to 30,238, 41,728.44 and 17,662.84

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Solution

The fourth proportional to 30,238, 41,728.44 and 17,662.84 is: 24,374.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,238 : 41,728.44 = 17,662.84 : x
  2. Step 2: Convert to fraction form
    30,238/41,728.44 = 17,662.84/x
  3. Step 3: Cross multiply
    30,238x = 41,728.44 × 17,662.84
  4. Step 4: Simplify right side
    30,238x = 737,042,759.17
  5. Step 5: Solve for x
    x = 737,042,759.17/30,238
  6. Step 6: Final answer
    x = 24,374.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.